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Compact binaries and GRBs

This focused workshop will bring together members of a collaboration working towards the understanding of non-vacuum compact binary systems and their connection with short gamma ray bursts. This collaboration lead by Lehner meets twice a year at the different institutions involved.

A sizable magnetic field in neutron star-black hole binaries can have a strong influence on the merger dynamics of the fluid by redistributing angular momentum through different mechanisms. The magnetic field can also be responsible for colimating jets.

We present results of fully relativisitc black hole--neutron star simulations with and without magnetic field proceeding from quasicircular initial data generated with the Lorene libraries.

We examine the gravitational wave signature through direct simulation and compute the electromagnetic spectrum through radiation transfer techniques. Finally, we compare the fluid structure and explore the magnetic field configuration in the post-merger remnant disk.